If you installed an electricalwater heater (boiler) then, of course, you know that it will have to drain water systematically. This can be caused by several reasons: your long absence at home, the onset of cold weather, the need to get rid of sediment or scale, anode replacement or routine maintenance. Although it also happens that in connection with the carrying out of any repair work, the Vodokanal can periodically turn off the water supply. And in the end, you have about 100 liters of water in your apartment, and it's not possible to get to life-giving moisture. Why does this happen and how to drain water from the water heater? The device of the boiler is such that the outlet of hot water is often located near the lid, and the flow of hot water occurs exclusively under the pressure of cold water.
To get unhindered access to waterunder the ceiling, it is necessary to provide for the possibility of draining the water through an additionally installed tap. A good option is to equip the tap before the check valve, and connect it with a tee with the hot water outlet. In this case, even if the water supply is disconnected, it is possible to temporarily open an additional tap, and the water will gravitate to the hot water outlet. Now you can use this water for household needs, for example, for washing dishes. Agree, because it is much more convenient than using a ladle to turn off the water. However, you must be extremely careful and do not allow accidental activation of the boiler with drained water. It is necessary to take as a rule, before turning on the electric water heater, it is necessary to check the presence of water in the system.
This option is far from the only one.In principle, to drain the water from the water heater at any time, you can generally reset the check valve and, without screwing it into the inlet of the water heater, install immediately after the water meter. In this case, if there is a sudden shutdown of the water, the check valve will not allow the water to escape, and it will flow into the system by gravity.
However, plumbers do not approve of thisconnection. Since the check valve is located far away, when heated in the water system, additional heat loss may occur, and when the water heater overheats, the "cold" circuit may overheat, which is highly undesirable.
Of course, in order to better imagine how to mergewater from the water heater, it is desirable to first study the general principles of its design. Usually the boiler is an enamel tank (or a stainless steel tank) into which two tubes, an automatic air vent, and also a heating element with a thermostat are cut. The tank itself is wrapped with a heater and inserted into an external tin case. On some models there is a built-in thermometer and a heater operation indicator.
If you just open the tap and turn off the powerThe water from the boiler does not completely merge. Only the part that is in the boiler above the hot water pipe (DWS) flows, so to drain the water completely, it is necessary to make sure that the air enters the tank. So, how to drain the water from the boiler?
1. The cold water supply must be completely shut off.
2. Next, open the nearest hot water tap to the water heater and pressurize it.
3.Using a Phillips screwdriver, unscrew the check box located on the safety valve and, before draining the water from the water heater, raise the flag by placing a water collection tank under the drain valve.
4. In the event that the pressure forces in the system are sufficient to raise water, then simply drain the water.
If, for some reason, waterdrain often enough, the best option is to install the inlet and outlet of the water heater tees with taps. Knowing how to drain water from the water heater, you can safely leave the house for a long time and not be afraid of unplanned outages of water.
